Sodium Methoxide → 1-Benzyl-8-hydroxy-2-oxo-1,2-dihydro-[1,6]naphthyridine-7-carboxylic acid [2-(methanesulfonyl-methyl-amino)-ethyl]amide

HRID 919821Notes

Reaction equation

CO[C:3]([C:5]1[C:14]([OH:15])=[C:13]2[C:8]([CH:9]=[CH:10][C:11](=[O:23])[N:12]2[CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)=[CH:7][N:6]=1)=[O:4].Cl.[NH2:25][CH2:26][CH2:27][N:28]([CH3:33])[S:29]([CH3:32])(=[O:31])=[O:30].C[O-].[Na+]>CCO>[CH3:32][S:29]([N:28]([CH3:33])[CH2:27][CH2:26][NH:25][C:3]([C:5]1[C:14]([OH:15])=[C:13]2[C:8]([CH:9]=[CH:10][C:11](=[O:23])[N:12]2[CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)=[CH:7][N:6]=1)=[O:4])(=[O:31])=[O:30]

Participants

Conditions

Temperature: 140 °C

Procedure

A mixture of 1-benzyl-8-hydroxy-2-oxo-1,2-dihydro-[1,6]naphthyridine-7-carboxylic acid methyl ester (25 mg, 0.081 mmol), N-(2-amino-ethyl)-N-methyl-methanesulfonamide HCl salt (61 mg, 0.32 mmol), and NaOMe (17 mg, 0.32 mmol) in EtOH (3 mL) was heated at 140° C. for 6 h in a microwave reactor. The mixture was concentrated to dryness, and the residue was partitioned between EtOAc and 0.1 M HCl. The organic layer was dried over MgSO4, and concentrated. The crude product was purified by silica gel chromatography (0-5% MeOH/CH2Cl2) to give 19 mg of the title compound as a white solid. MS: (+) m/z 431.34 (M+1).

Workup

concentrationThe mixture was concentrated to dryness
customthe residue was partitioned between EtOAc and 0.1 M HCl
dry with materialThe organic layer was dried over MgSO4
concentrationconcentrated
customThe crude product was purified by silica gel chromatography (0-5% MeOH/CH2Cl2)

Sources & evidence

ORD record: ord-4825b826246d4474a66144fb3c142648
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09271970B2

Reaction notes

Loading…